S03E06: The Two Faces of Slimer
An ectoplasmic entity leaks out of the containment unit and it makes Slimer mutate into a big ugly monster during his sleep.
Previous Episode 
Season 1
Ghosts Я Us
S1E1 / 13 Sep 1986
Killerwatt
S1E2 / 20 Sep 1986
Mrs. Roger's Neighborhood
S1E3 / 27 Sep 1986
Slimer, Come Home
S1E4 / 04 Oct 1986
Troll Bridge
S1E5 / 11 Oct 1986
The Boogieman Cometh
S1E6 / 18 Oct 1986
Mr. Sandman, Dream Me a Dream
S1E7 / 25 Oct 1986
When Halloween Was Forever
S1E8 / 01 Nov 1986
Look Homeward, Ray
S1E9 / 08 Nov 1986
Take Two
S1E10 / 15 Nov 1986
Citizen Ghost
S1E11 / 22 Nov 1986
Janine's Genie
S1E12 / 06 Dec 1986
X-Mas Marks the Spot
S1E13 / 13 Dec 1986
Season 2
Janine's Day Off
S2E1 / 14 Sep 1987
Adventures in Slime and Space
S2E2 / 15 Sep 1987
Ragnarok and Roll
S2E3 / 16 Sep 1987
Captain Steel Saves the Day
S2E4 / 17 Sep 1987
They Call Me Mister Slimer
S2E5 / 18 Sep 1987
Buster the Ghost
S2E6 / 21 Sep 1987
Night Game
S2E7 / 22 Sep 1987
Rollerghoster
S2E8 / 23 Sep 1987
Who're You Calling Two-Dimensional?
S2E9 / 24 Sep 1987
Dairy Farm
S2E10 / 25 Sep 1987
Egon's Ghost
S2E11 / 28 Sep 1987
Janine Melnitz, Ghostbuster
S2E12 / 29 Sep 1987
The Cabinet of Calamari
S2E13 / 30 Sep 1987
Ghostbuster of the Year
S2E14 / 01 Oct 1987
Egon's Dragon
S2E15 / 02 Oct 1987
No One Comes to Lupusville
S2E16 / 05 Oct 1987
The Bird of Kildarby
S2E17 / 06 Oct 1987
The Long, Long, Long, etc. Goodbye
S2E18 / 07 Oct 1987
Cold Cash and Hot Water
S2E19 / 08 Oct 1987
Who's Afraid of the Big Bad Ghost?
S2E20 / 09 Oct 1987
The Man Who Never Reached Home
S2E21 / 12 Oct 1987
Doctor, Doctor
S2E22 / 13 Oct 1987
You Can't Take it With You
S2E23 / 14 Oct 1987
Victor the Happy Ghost
S2E24 / 15 Oct 1987
Lost and Foundry
S2E25 / 16 Oct 1987
Chicken, He Clucked
S2E26 / 19 Oct 1987
Venkman's Ghost Repellers
S2E27 / 20 Oct 1987
The Hole in the Wall Gang
S2E28 / 21 Oct 1987
Ghost Busted
S2E29 / 22 Oct 1987
The Ghostbusters in Paris
S2E30 / 23 Oct 1987
A Fright at the Opera
S2E31 / 26 Oct 1987
The Collect Call of Cathulhu
S2E32 / 27 Oct 1987
Banshee Bake a Cherry Pie?
S2E33 / 28 Oct 1987
Drool, the Dog Faced Goblin
S2E34 / 29 Oct 1987
Boo-Dunit
S2E35 / 30 Oct 1987
The Revenge of Murray the Mantis
S2E36 / 02 Nov 1987
The Headless Motorcyclist
S2E37 / 03 Nov 1987
The Thing in Mrs. Faversham's Attic
S2E38 / 04 Nov 1987
Moaning Stones
S2E39 / 05 Nov 1987
Knock, Knock
S2E40 / 06 Nov 1987
The Spirit of Aunt Lois
S2E41 / 09 Nov 1987
Sea Fright
S2E42 / 10 Nov 1987
Ghost Fight at the O.K. Corral
S2E43 / 11 Nov 1987
Cry Uncle
S2E44 / 12 Nov 1987
Bustman's Holiday
S2E45 / 13 Nov 1987
The Scaring of the Green
S2E46 / 16 Nov 1987
Ain't Nasa-Sarily So
S2E47 / 17 Nov 1987
Apocalypse -- What, Now?
S2E48 / 18 Nov 1987
The Devil to Pay
S2E49 / 19 Nov 1987
Ghost Grows in Brooklyn
S2E50 / 20 Nov 1987
I Am the City
S2E51 / 23 Nov 1987
Last Train to Oblivion
S2E52 / 24 Nov 1987
Beneath These Streets
S2E53 / 25 Nov 1987
Play Them Ragtime Boos
S2E54 / 26 Nov 1987
The Old College Spirit
S2E55 / 27 Nov 1987
Hard Knight's Day
S2E56 / 30 Nov 1987
Masquerade
S2E57 / 01 Dec 1987
Deadcon 1
S2E58 / 02 Dec 1987
Don't Forget the Motor City
S2E59 / 03 Dec 1987
The Devil in the Deep
S2E60 / 04 Dec 1987
Lights! Camera! Haunting!
S2E61 / 07 Dec 1987
Egon on the Rampage
S2E62 / 08 Dec 1987
Station Identification
S2E63 / 09 Dec 1987
Hanging By a Thread
S2E64 / 10 Dec 1987
Transylvanian Homesick Blues
S2E65 / 11 Dec 1987
Season 3
Baby Spookums
S3E1 / 12 Sep 1987
It's a Jungle Out There
S3E2 / 19 Sep 1987
Slimer, Is That You?
S3E3 / 03 Dec 1987
The Boogeyman Is Back
S3E4 / 26 Sep 1987
Once Upon a Slime
S3E5 / 03 Oct 1987
The Two Faces of Slimer
S3E6 / 10 Oct 1987
Sticky Business
S3E7 / 17 Oct 1987
Halloween II 1/2
S3E8 / 24 Oct 1987
Loathe Thy Neighbor
S3E9 / 31 Oct 1987
The Grundel
S3E10 / 07 Nov 1987
Big Trouble With Little Slimer
S3E11 / 14 Nov 1987
The Copycat
S3E12 / 21 Nov 1987
Camping It Up
S3E13 / 05 Dec 1987
Season 4
The Joke's on Ray
S4E1 / 10 Sep 1988
Flip Side
S4E2 / 17 Sep 1988
Poultrygeist
S4E3 / 24 Sep 1988
Standing Room Only
S4E4 / 08 Oct 1988
Robo-Buster
S4E5 / 15 Oct 1988
Short Stuff
S4E6 / 22 Oct 1988
Follow That Hearse
S4E7 / 12 Nov 1988
The Brooklyn Triangle
S4E8 / 19 Nov 1988
Season 5
Something's Going Around
S5E1 / 16 Sep 1989
Three Men and an Egon
S5E2 / 28 Oct 1989
Elementary My Dear Winston
S5E3 / 30 Sep 1989
If I Were a Witch Man
S5E4 / 21 Oct 1989
Partners in Slime
S5E5 / 14 Oct 1989
Future Tense
S5E6 / 23 Dec 1989
Jailbusters
S5E7 / 09 Dec 1989
The Ghostbusters! Live, from Al Capone's Tomb!
S5E8 / 02 Dec 1989
The Halloween Door
S5E9 / 02 Dec 1989
Venk-Man!
S5E10 / 18 Nov 1989
Trading Faces
S5E11 / 23 Sep 1989
Transcendental Tourists
S5E12 / 09 Sep 1989
Surely You Joust
S5E13 / 16 Dec 1989
Kitty-Cornered
S5E14 / 18 Nov 1989
Slimer's Curse
S5E15 / 07 Oct 1989
Til Death Do Us Part
S5E16 / 21 Oct 1989
It's About Time
S5E17 / 25 Nov 1989
The Ransom of Greenspud
S5E18 / 29 Oct 1989
Revenge of the Ghostmaster
S5E19 / 09 Dec 1989
Loose Screws
S5E20 / 09 Dec 1989
Slimer Streak
S5E21 / 16 Dec 1989
Season 6
Janine, You've Changed
S6E1 / 08 Sep 1990
You Can't Teach an Old Demon New Tricks
S6E2 / 08 Sep 1990
The Haunting of Heck House
S6E3 / 15 Sep 1990
Ghostworld
S6E4 / 15 Sep 1990
Mean Green Teen Machine
S6E5 / 22 Sep 1990
Spacebusters
S6E6 / 22 Sep 1990
My Left Fang
S6E7 / 29 Sep 1990
Russian About
S6E8 / 06 Oct 1990
The Slob
S6E9 / 06 Oct 1990
Deja Boo
S6E10 / 13 Oct 1990
Afterlife in the Fast Lane
S6E11 / 20 Oct 1990
Guess What's Coming to Dinner
S6E12 / 27 Oct 1990
Stay Tooned
S6E13 / 03 Nov 1990
Very Beast Friends
S6E14 / 10 Nov 1990
Busters in Toyland
S6E15 / 17 Nov 1990
The Magnificent Five
S6E16 / 24 Nov 1990
Season 7
The Treasure of Sierra Tamale
S7E1 / 07 Sep 1991
Not Now, Slimer!
S7E2 / 14 Sep 1991
Attack of the B-Movie Monsters
S7E3 / 21 Sep 1991
20,000 Leagues Under the Street
S7E4 / 05 Oct 1991
Maurice LaMarche
Egon Spengler (voice)
Dave Coulier
Peter Venkman (voice)
Frank Welker
Ray Stantz / Slimer (voice)
Kath Soucie
Janine Melnitz (voice)
Buster Jones
Winston Zeddemore (voice)
